I am an Indian, presently working in Australia. I was surprised to see that here people DO NOT use their vehicles horns routinely. I have used my horn only once or twice in last 9 months. Here the horn is used only when someone has done something wrong while driving. By and large the roads are not at all noisy here. This is a really good discipline we should learn from such countries rather than acquiring bad things. I hope this great move by the Mumbai police will have a big impact on our thinking and we will prove (as ever) that we are a GREAT NATION. JAI HIND